Answer:
21x^2-2x+1
Step-by-step explanation:
The area of shaded region= The area of the floor - area of the identical islands
The area of shaded region=(5x+1)^2-2*(2x)(x+3)=25x^2+1+10x-4x^2-12x=21x^2-2x+1
5: THEO = what should happen
EXP = Wha actually happens.
Answer:
25
Step by step:
1. prepare the equation
-4 = x/5 - 9
2. add 9 to both sides
-4 = x/5 - 9
+9 +9
5 = x/5
3. multiply both sides by 5
5 = x/5
(5) (5)
25 = x
4. x=25
Hope this helps
